Abstract:Aiming at the collaborative R&D decision-making problem of enterprise-led innovation consortia, the differential game model of Nash non-cooperative R&D model, the cost sharing model of leading enterprises and collaborative cooperative R&D mode was constructed respectively, and the optimal trajectory of tripartite effort, cost sharing ratio, optimal benefit function and key core technology stock were obtained under the three R&D modes. Through the comparative analysis of the three game results, it is found that the cost sharing from leading enterprises can improve the R&D efforts of academic and research institutions and SMEs, and realize the Pareto improvement of the R&D benefits of the three parties. Under the collaborative R&D model, the degree of R&D effort, overall R&D revenue and key core technology stock of the three parties are better than the other two models. Finally, through numerical simulation analysis, the effectiveness of the model is verified, and the sensitivity of key parameters is analyzed, which provides a theoretical basis for the construction and management of enterprise-led innovation consortia.